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课程标准强调重视学生已有的经验,“让学生在实际背景中理解基本的数量关系和变化规律,注重使学生经历从实际问题中建立数学模型、估计、求解验证解的正确性与合理性”.从这个角度讲,数学模型是数学学习中不可缺少的部分,学生的数学学习过程,其实就是一个不断地建模和用模的过程,数学建模能够引发学生对数学学习的兴趣,提高学习数学的效率.由于学生知识基础、生活经验有限,所以,在构建数学模型的过程中,倾向于学生生活实际,结合教材,创设情景,合理设计问
The curriculum standard emphasizes the students’ existing experience, "let the students understand the basic quantitative relationship and the change rule in the actual background, pay attention to make the student experience establish the mathematical model from the actual problem, estimate and solve the correctness and rationality of the verification solution From this point of view, the mathematical model is an indispensable part of mathematics learning. The students ’mathematical learning process is actually a process of constant modeling and mold-making. Mathematical modeling can arouse students’ interest in mathematics learning, Improve the efficiency of learning mathematics.Because of students knowledge base, life experience is limited, so in the process of building mathematical model, tend to students’ life, combined with textbooks, create scenarios, a reasonable design